How to change skybox parameters in a area?

So I’m trying to turn the basic skybox into a rainy looking skybox.
I have the parameters of my rainy skybox and I want to set the skybox of the game like that in a restricted area ( inside a box trigger ).
Here is a picture of what I have made :

Hey there, i think cloud opacity and color are only updated on the construction script of the skyphere, so they wont be updated in runtime. The only way i’m seeing this working is that you collapse all of the Set Vector parameter stuff in the construction script to a function and after you have the actor overlap you do what you are doing and at the end you call the new function to update the material values.